Resolving a solution that Drupal clean URL cannot enable

Some prerequisites:
Website Domain name: site.com
Web site installation directory:/var/www

After git pull the code to the server and deployed the database, the clean URL is not enabled, and the following is the troubleshooting and resolution steps:

1: Establish a info.php file, which input:

<?php
Phpinfo ();
?>
and save, view the page found that the Apache Mod_rewrite module is not enabled, Linux executes the following command to install the rewrite module:
A2enmod rewrite
Then restart the Apache service:
sudo service apache2 restart
In this detection, the clean URL still does not work.

2: Search by Google for the following keywords:
"Drupal Apache clear URL not working"

By reading quickly, you see the solution, which is to find the Apache configuration file: Probably one of the following files

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/etc/apache2/site-available/default /etc/apache2/site-enable/000-default /etc/apache2/httpd.conf

Wait a minute
And then/var/www the Apache rules in the

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AllowOverride None to allowoverride all

When you are done, restart the Apache server:

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sudo service apache2 restart

Then go to the configuration page of the clean URL, this time you can access, the clean URL check and save, jump to a blank page. Refresh anyway, always blank.

Kiss, what do you do when you encounter such a problem? Do you have a solution? Whether or not, wall for three minutes, and then look down.

3: If you can't access your Drupal site through a clean URL, you can access it in the following ways.

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Site.com/index.php?q=admin

Habitual view of the => recent log message
You can find a row that mentions no write permissions to the Temp folder and modifies the Temp folder permissions.